OSPF Configuration Example:

OSPF Single Area Configuration:

OSPF stands for Open Shortest
Path First which is an open standard routing protocol that’s been implemented
by lots of network vendors, including Cisco. If we have multiple routers and not
all of them are Cisco, then we can’t use EIGRP, so our remaining protocol
options are basically RIP RIPv2 and OSPF. If it’s a large network, then, we cannot
use RIP protocol really, our only options are OSPF and something called route
redistribution. OSPF uses the Dijkstra algorithm for best path selection in the
Network. First, the shortest path is constructed, and then the routing table
contains the resulting best paths. OSPF converges is quick, although perhaps
not as quickly as EIGRP, it also supports both IP and IPv6 routing protocols.

Route redistribution: is a translation service between routing
protocols